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7.0 Cooper Discs
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Author:  timmy201 [ Mon May 05, 2014 11:20 pm ]
Post subject:  7.0 Cooper Discs

Hi guys,

I picked up a 7" Cooper brake set on the weekend. It's missing the calipers though.

Image

If I could get a hold of some 998 calipers is it worthwhile? It would let me keep my driveshafts and the wheels I've got now.

Any thoughts?

Author:  Mick [ Mon May 05, 2014 11:30 pm ]
Post subject:  Re: 7.0 Cooper Discs

I've got a set of calipers here if you need some.

Do them up for your own use?? Nope. 7.5s or nothing unless you own a 997 or 998...especially in that state.

There will be someone somewhere looking to restore their cooper however.

Spotted your car at Illawarra on the weekend. Jammed in next to a Moggie breadvan.

Author:  drmini in aust [ Tue May 06, 2014 7:38 am ]
Post subject:  Re: 7.0 Cooper Discs

Don't believe all the old press that they are a POS.
They are not bad if done right- I put a set on the 1976 bastardchild ClubbyMatic I sold years ago. It stopped pretty well.

Use new rotors (as they are only 1/4" thick when new).
Use 998 calipers, or mill 997 ones out for 998 pads.
Fit metal king or other premium 998 pads
Add a VH44 servo.
[edit] and leave the dust shields off for better cooling.

They do not resist fade as well as S brakes, but done this way they are fine on a road Mini. And, like all disc systems they self-adjust. 8)

Author:  1071 S [ Tue May 06, 2014 6:01 pm ]
Post subject:  Re: 7.0 Cooper Discs

Just looking at the photo... you did get the uprights (hubs) as well?? They're not the same as the drum versions..

Cheers, Ian

Author:  Mick [ Tue May 06, 2014 6:30 pm ]
Post subject:  Re: 7.0 Cooper Discs

1071 S wrote:
Just looking at the photo... you did get the uprights (hubs) as well?? They're not the same as the drum versions..

Cheers, Ian


They're attached to the back of the heatshields, you can just see the ball joints on one, and the ball joint mount on the other.

Author:  mini0998 [ Tue May 06, 2014 7:12 pm ]
Post subject:  Re: 7.0 Cooper Discs

I was in the same situation as you about 2 years ago. I got a set of cooper 7 inch brakes without callipers but with drive shafts that came as spares with a car I purchased. It was not many more $ for me to buy a new 7.5 inch cooper s brake kit than it was to fix up the old 7 inch cooper brakes. By the time you buy callipers, calliper repair kits, discs, pads, bearings and ball joints for a bit more cash you can go to 7.5 inch brakes and be done with it. I ended up getting the 7.5 inch cooper s brake kit and the 7 inch cooper brakes are still in the shed.

Author:  Mick [ Tue May 06, 2014 7:18 pm ]
Post subject:  Re: 7.0 Cooper Discs

Still look good once done, and I can't believe it but EBC put production time aside to producing green pads for these discs.
Kind of offsets the tendency to overheat. Still not the kind you want to go sweeping down Macquarie Pass in however. Those truck gravel traps aren't just for trucks.... They build up a lot of heat very quickly after a few good presses at speed. Also feel pretty wooden compared to the S 7.5" discs.

I actually swapped out a set of Cooper S discs to go back to 7.0" Cooper discs believe it or not.
Its for a 997 Cooper however...

Don't throw out the drive flanges however. They're not really available from what I have seen, and are unique to the 997/8 discs alone having a machined back face, and suiting the small drum brake CVs.

Image

Author:  drmini in aust [ Tue May 06, 2014 9:48 pm ]
Post subject:  Re: 7.0 Cooper Discs

Those pads ^^^ are the 998 ones, whereas the old 997 ones are postage stamp sized and pretty useless.

Author:  Mick [ Tue May 06, 2014 10:02 pm ]
Post subject:  Re: 7.0 Cooper Discs

Sure are. Wouldn't own the 997 type.

I'd rather run with air in the brake lines.

Author:  Timbo [ Wed May 07, 2014 11:38 am ]
Post subject:  Re: 7.0 Cooper Discs

But how would they compare to the single leading shoe drum brakes they replaced in 1961?

Tim

Author:  drmini in aust [ Wed May 07, 2014 1:49 pm ]
Post subject:  Re: 7.0 Cooper Discs

Timbo wrote:
But how would they compare to the single leading shoe drum brakes they replaced in 1961?

Tim

Still didn't stop worth a damn but at least they self-adjusted...
I don't know how they stopped those 997 Coopers at Bathurst. :?

Author:  timmy201 [ Wed May 07, 2014 1:53 pm ]
Post subject:  Re: 7.0 Cooper Discs

Mick wrote:
I've got a set of calipers here if you need some.

Do them up for your own use?? Nope. 7.5s or nothing unless you own a 997 or 998...especially in that state.

There will be someone somewhere looking to restore their cooper however.

Spotted your car at Illawarra on the weekend. Jammed in next to a Moggie breadvan.

Thanks. I might be better off swapping the bits to someone with a 997/998 Cooper...
drmini in aust wrote:
Don't believe all the old press that they are a POS.
They are not bad if done right- I put a set on the 1976 bastardchild ClubbyMatic I sold years ago. It stopped pretty well.

Use new rotors (as they are only 1/4" thick when new).
Use 998 calipers, or mill 997 ones out for 998 pads.
Fit metal king or other premium 998 pads
Add a VH44 servo.
[edit] and leave the dust shields off for better cooling.

They do not resist fade as well as S brakes, but done this way they are fine on a road Mini. And, like all disc systems they self-adjust. 8)

Is a servo essential to them working well? Do most people run a servo with 7.5 brakes as well? The greenstuff pads are supposed to be alright too.

The overall message I'm getting is that they "make do" but they don't compare to 7.5 brakes.
mini0998 wrote:
I was in the same situation as you about 2 years ago. I got a set of cooper 7 inch brakes without callipers but with drive shafts that came as spares with a car I purchased. It was not many more $ for me to buy a new 7.5 inch cooper s brake kit than it was to fix up the old 7 inch cooper brakes. By the time you buy callipers, calliper repair kits, discs, pads, bearings and ball joints for a bit more cash you can go to 7.5 inch brakes and be done with it. I ended up getting the 7.5 inch cooper s brake kit and the 7 inch cooper brakes are still in the shed.

Yeah, that's what I'm thinking now.
Mick wrote:
Still look good once done, and I can't believe it but EBC put production time aside to producing green pads for these discs.
Kind of offsets the tendency to overheat. Still not the kind you want to go sweeping down Macquarie Pass in however. Those truck gravel traps aren't just for trucks.... They build up a lot of heat very quickly after a few good presses at speed. Also feel pretty wooden compared to the S 7.5" discs.

I actually swapped out a set of Cooper S discs to go back to 7.0" Cooper discs believe it or not.
Its for a 997 Cooper however...

Don't throw out the drive flanges however. They're not really available from what I have seen, and are unique to the 997/8 discs alone having a machined back face, and suiting the small drum brake CVs.

Image

Yeah those do look good. I really need to pull them apart to work out what condition the bits are in as my next priority.

I've currently got a bog standard 998 with twin cylinder drums on the front, and the brakes are perfectly fine for me (once they are adjusted properly), although I'm looking at upgrading to an 1100 at some stage. I don't want to spend 90% of the cost on the 7" brakes and end up with something half as good as the 7.5's.

But if the drive flanges are worn it's obviously not worth it.

7.0 Brakes:
Calipers ($??)
Rebuild calipers with pistons and seals ($80-120)
Discs (about $30-40 extra per disc than 7.5")
Bearings
Pads
Ball Joints
Booster?

7.5 brakes:
New Calipers ($340-540) Has anyone had any issues with the minispares brand calipers?
Driveshaft/CV + nuts ($150-$200)
Drive Flanges ($100-150)
Discs
Bearings
Pads
Ball Joints
Set of wheels/go back to 3.5 steels/flares

Author:  drmini in aust [ Wed May 07, 2014 2:15 pm ]
Post subject:  Re: 7.0 Cooper Discs

Timmy,
7" discs suffer more from heat.
So, you need harder pads to avoid fade. And to make the pads last longer (they are pretty thin).
So, then the pedal is harder to push. A VH44 servo fixes this.

Note that when I put these on the car 20+ years ago I already had a spare VH44, and S brakes were costly.
Also I had acquired the Cooper brakes 15 years before for nix.

These days it may well be cheaper and better to bung new S brake bits & CVs on there instead, as you can use the Cooper swivel hubs you already have.

Author:  Lillee [ Wed May 07, 2014 4:15 pm ]
Post subject:  Re: 7.0 Cooper Discs

timmy201 wrote:
Hi guys,

Image

Any thoughts?


Looking at what you have there, it wouldn't be what I call "brakes" at all. All you have there is discs and flanges. You're missing about 80% of the disc setup, uprights or hubs, CV's, calipers, brake hoses, pads, pins, pistons, seal kits, ball joints... it all adds up in the end.

Author:  timmy201 [ Wed May 07, 2014 4:40 pm ]
Post subject:  Re: 7.0 Cooper Discs

Lillee wrote:
timmy201 wrote:
Hi guys,

Image

Any thoughts?


Looking at what you have there, it wouldn't be what I call "brakes" at all. All you have there is discs and flanges. You're missing about 80% of the disc setup, uprights or hubs, CV's, calipers, brake hoses, pads, pins, pistons, seal kits, ball joints... it all adds up in the end.

Only missing 75%... I have the uprights and some crusty old bearings! And I could reuse the CV's from my current drum set up.

Maybe I should have called it "Random incomplete rusty pieces that once made up a 7" front set of Cooper brakes"

:lol:

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